Home / 21,199.73-31,750.38-18,575.33

Finding the Fourth Proportional to 21,199.73, 31,750.38 and 18,575.33

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Solution

The fourth proportional to 21,199.73, 31,750.38 and 18,575.33 is: 27,819.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.73 : 31,750.38 = 18,575.33 : x
  2. Step 2: Convert to fraction form
    21,199.73/31,750.38 = 18,575.33/x
  3. Step 3: Cross multiply
    21,199.73x = 31,750.38 × 18,575.33
  4. Step 4: Simplify right side
    21,199.73x = 589,773,627.37
  5. Step 5: Solve for x
    x = 589,773,627.37/21,199.73
  6. Step 6: Final answer
    x = 27,819.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.